公开(公告)号：US20090192776A1

公开(公告)日：2009-07-30

申请号：US12163318

申请日：2008-06-27

申请人： Emrah Acar ,  Bhavna Agrawal ,  Peter Feldmann ,  Ying Liu ,  Steven G. Walker

发明人： Emrah Acar ,  Bhavna Agrawal ,  Peter Feldmann ,  Ying Liu ,  Steven G. Walker

IPC分类号： G06F17/50

CPC分类号： G06F17/5036

摘要： A solution for analyzing a circuit using initial charge information is provided. In particular, one or more nodes in a design for the circuit is initialized with an initial charge. The charge can comprise a non-equilibrium charge, thereby simulating the history effect, the impact of a charged particle, electro-static discharge (ESD), and/or the like. Operation of the circuit is then simulated over a set of input cycles based on the initial charge(s). To this extent, the non-equilibrium initial condition solution enables the state of the circuit to be controlled and solves the initial system based on these values. This capability is very useful to condition the circuit at a worst-case, best-case, and/or the like, status. Further, in one embodiment of the invention, a set of equations are provided to implement the non-equilibrium initial charge analysis, which provide a more efficient initialization of the circuit than current solutions.

摘要翻译： 提供了使用初始电荷信息分析电路的解决方案。 特别地，用于电路的设计中的一个或多个节点用初始电荷初始化。 电荷可以包括非平衡电荷，从而模拟历史效应，带电粒子的影响，静电放电（ESD）等。 然后基于初始电荷在一组输入周期上模拟电路的操作。 在这种程度上，非平衡初始条件解决方案使得能够控制电路的状态并且基于这些值来解决初始系统。 该功能对于在最坏情况，最佳情况和/或类似状态下调节电路非常有用。 此外，在本发明的一个实施例中，提供一组方程以实现非平衡初始电荷分析，其提供电路比当前解决方案更有效的初始化。

公开(公告)号：US07519526B2

公开(公告)日：2009-04-14

申请号：US11355342

申请日：2006-02-16

申请人： Emrah Acar ,  Bhavna Agrawal ,  Peter Feldmann ,  Ying Liu ,  Steven G. Walker

发明人： Emrah Acar ,  Bhavna Agrawal ,  Peter Feldmann ,  Ying Liu ,  Steven G. Walker

IPC分类号： G06F17/50

CPC分类号： G06F17/5036

摘要： A solution for analyzing a circuit using initial charge information is provided. In particular, one or more nodes in a design for the circuit is initialized with an initial charge. The charge can comprise a non-equilibrium charge, thereby simulating the history effect, the impact of a charged particle, electro-static discharge (ESD), and/or the like. Operation of the circuit is then simulated over the set of input cycles based on the initial charge(s). To this extent, the non-equilibrium initial condition solution enables the state of the circuit to be controlled and solves the initial system based on these values. This capability is very useful to condition the circuit at a worst-case, best-case, and/or the like, status. Further, in one embodiment of the invention, a set of equations are provided to implement the non-equilibrium initial charge analysis, which provide a more efficient initialization of the circuit than current solutions.

摘要翻译： 提供了使用初始电荷信息分析电路的解决方案。 特别地，用于电路的设计中的一个或多个节点用初始电荷初始化。 电荷可以包括非平衡电荷，从而模拟历史效应，带电粒子的影响，静电放电（ESD）等。 然后基于初始充电在该组输入周期上模拟电路的操作。 在这种程度上，非平衡初始条件解决方案使得能够控制电路的状态并且基于这些值来解决初始系统。 该功能对于在最坏情况，最佳情况和/或类似状态下调节电路非常有用。 此外，在本发明的一个实施例中，提供一组方程以实现非平衡初始电荷分析，其提供电路比当前解决方案更有效的初始化。

公开(公告)号：US07117455B2

公开(公告)日：2006-10-03

申请号：US10626762

申请日：2003-07-24

申请人： Steven G. Walker ,  Chandramouli Visweswariah ,  Katya Scheinberg ,  Phillip Restle

发明人： Steven G. Walker ,  Chandramouli Visweswariah ,  Katya Scheinberg ,  Phillip Restle

IPC分类号： G06F17/50

CPC分类号： G06F17/5063 ,  G06F17/505

摘要： The present invention is a system and method for optimizing electrical circuits by means of derivative-free optimization. Tunable parameters such as component values, transistor sizes or model parameters are automatically adjusted to obtain an optimal circuit. Any method of measuring the performance of the circuit, including computer simulation, can be incorporated into the optimization technique, with no derivative requirements. An arbitrary continuous optimization problem can be posed, including an objective function, equality and inequality constraints, and simple bounds on the tunable parameters. The optimization technique is efficient and guarantees that it will find a locally optimal solution from any starting point. Further, the procedure includes a method of automatically recovering from electrical failure to enable automatic and productive circuit optimization. A set of measurement widgets is provided to automatically introduce the checking required to recover from electrical failure. The automated circuit optimization leads to higher quality circuits, increases designer productivity, results in a better understanding of the tradeoffs inherent in the circuit and lifts the thinking of the circuit designer to a higher level.

摘要翻译： 本发明是通过无衍生优化优化电路的系统和方法。 可调参数（如元件值，晶体管尺寸或型号参数）会自动调整以获得最佳电路。 任何测量电路性能的方法，包括计算机仿真，都可以纳入优化技术，无需衍生要求。 可以提出任意的连续优化问题，包括目标函数，等式和不等式约束以及可调参数的简单界限。 优化技术是有效的，并保证从任何起点找到局部最优解。 此外，该过程包括从电故障自动恢复以实现自动和生产性电路优化的方法。 提供一组测量小部件，以自动引入从电气故障中恢复所需的检查。 自动化电路优化导致更高质量的电路，提高设计人员的生产力，从而更好地了解电路固有的折中，并将电路设计师的思维提升到更高的水平。

公开(公告)号：US08290760B2

公开(公告)日：2012-10-16

申请号：US12163318

申请日：2008-06-27

申请人： Emrah Acar ,  Bhavna Agrawal ,  Peter Feldmann ,  Ying Liu ,  Steven G. Walker

发明人： Emrah Acar ,  Bhavna Agrawal ,  Peter Feldmann ,  Ying Liu ,  Steven G. Walker

IPC分类号： G06F17/50

CPC分类号： G06F17/5036

摘要： A solution for analyzing a circuit using initial charge information is provided. In particular, one or more nodes in a design for the circuit is initialized with an initial charge. The charge can comprise a non-equilibrium charge, thereby simulating the history effect, the impact of a charged particle, electro-static discharge (ESD), and/or the like. Operation of the circuit is then simulated over a set of input cycles based on the initial charge(s). To this extent, the non-equilibrium initial condition solution enables the state of the circuit to be controlled and solves the initial system based on these values. This capability is very useful to condition the circuit at a worst-case, best-case, and/or the like, status. Further, in one embodiment of the invention, a set of equations are provided to implement the non-equilibrium initial charge analysis, which provide a more efficient initialization of the circuit than current solutions.

摘要翻译： 提供了使用初始电荷信息分析电路的解决方案。 特别地，用于电路的设计中的一个或多个节点用初始电荷初始化。 电荷可以包括非平衡电荷，从而模拟历史效应，带电粒子的影响，静电放电（ESD）等。 然后基于初始电荷在一组输入周期上模拟电路的操作。 在这种程度上，非平衡初始条件解决方案使得能够控制电路的状态并且基于这些值来解决初始系统。 该功能对于在最坏情况，最佳情况和/或类似状态下调节电路非常有用。 此外，在本发明的一个实施例中，提供一组方程以实现非平衡初始电荷分析，其提供电路比当前解决方案更有效的初始化。